Copper-cadmium-silver photochromic glass

Details Copper-cadmium-silver photochromic glass Copper-cadmium-silver photochromic glass

C - Chemistry, Metallurgy

03

C

96/76

C03C 3/04 (2006.01) C03C 4/06 (2006.01)

Patent

CA 1093367

Kerko-Tick 4-3 COPPER-CADMIUM-SILVER PHOTOCHROMIC GLASS Abstract of the Disclosure Copper, cadmium, silver and halogen-containing glass compositions suitable for the production of photochromic glass articles comprising these constituents in a separated, particulate photochromic phase are described. The glasses exhibit a characteristic copper-cadmium halide absorption inflection in the near ultraviolet, and are surface-darkenable on exposure to ultraviolet and short wavelength visible light. However, they also exhibit optical bleaching charac- teristics and a variety of dark-state colors not previously obtained in surface darkening glasses.

281612

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